Having watched the third episode now, all I can say is: Syrio is awesome. Arya's dance lessons were already one of my favourite parts of the books, and as so often in the series, they did them just right.

Bookstores got the books at 27th / 28th to be able to prepare for the release. Amazon messed up and shipped "a few" copies (about 200 in germany) before they realized their mistake. After that, shipping was stopped even for bookstores and most stores will not get them until the 11th just to prevent more pre-release sales.